Fix bug 540: SelfAdjointEigenSolver improperly used the upper triangular part to extract the scaling factor.
Fix bug 540: SelfAdjointEigenSolver improperly used the upper triangular part to extract the scaling factor.

TSC21/Eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,TSC21/Eigen,ROCmSoftwarePlatform/hipeigen,ROCmSoftwarePlatform/hipeigen,toastedcrumpets/eigen,ritsu1228/eigen,Zefz/eigen,toastedcrumpets/eigen,Zefz/eigen,pasuka/eigen,ritsu1228/eigen,ROCmSoftwarePlatform/hipeigen,TSC21/Eigen,TSC21/Eigen,Zefz/eigen,Zefz/eigen,ritsu1228/eigen,pasuka/eigen,toastedcrumpets/eigen,ritsu1228/eigen,ritsu1228/eigen,pasuka/eigen,pasuka/eigen,toastedcrumpets/eigen